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Efficient high-order harmonic generation boosted by below-threshold harmonics.

Brizuela, Fernando LU ; Heyl, Christoph LU ; Rudawski, Piotr LU ; Kroon, David LU ; Rading, Linnea LU ; Dahlström, J M; Mauritsson, Johan LU ; Johnsson, Per LU ; Arnold, Cord LU and L'Huillier, Anne LU (2013) In Scientific Reports 3.
Abstract
High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. Its main drawback, however, is the low conversion efficiency, setting limits for many applications, such as ultrafast coherent imaging, nonlinear processes in the XUV range, or seeded free electron lasers. Here we introduce a novel scheme based on using below-threshold harmonics, generated in a "seeding cell", to boost the HHG process in a "generation cell", placed further downstream in the focused laser beam. By modifying the fundamental driving field, these low-order harmonics alter the ionization step of the nonlinear HHG process. Our dual-cell scheme... (More)
High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. Its main drawback, however, is the low conversion efficiency, setting limits for many applications, such as ultrafast coherent imaging, nonlinear processes in the XUV range, or seeded free electron lasers. Here we introduce a novel scheme based on using below-threshold harmonics, generated in a "seeding cell", to boost the HHG process in a "generation cell", placed further downstream in the focused laser beam. By modifying the fundamental driving field, these low-order harmonics alter the ionization step of the nonlinear HHG process. Our dual-cell scheme enhances the conversion efficiency of HHG, opening the path for the realization of robust intense attosecond XUV sources. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Scientific Reports
volume
3
publisher
Nature Publishing Group
external identifiers
  • wos:000315851300003
  • pmid:23475106
  • scopus:84875165419
ISSN
2045-2322
DOI
10.1038/srep01410
language
English
LU publication?
yes
id
d9859f02-9326-4bdc-8941-dc4480ca49b7 (old id 3628347)
date added to LUP
2013-04-18 23:24:13
date last changed
2019-08-22 02:16:06
@article{d9859f02-9326-4bdc-8941-dc4480ca49b7,
  abstract     = {High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. Its main drawback, however, is the low conversion efficiency, setting limits for many applications, such as ultrafast coherent imaging, nonlinear processes in the XUV range, or seeded free electron lasers. Here we introduce a novel scheme based on using below-threshold harmonics, generated in a "seeding cell", to boost the HHG process in a "generation cell", placed further downstream in the focused laser beam. By modifying the fundamental driving field, these low-order harmonics alter the ionization step of the nonlinear HHG process. Our dual-cell scheme enhances the conversion efficiency of HHG, opening the path for the realization of robust intense attosecond XUV sources.},
  articleno    = {1410},
  author       = {Brizuela, Fernando and Heyl, Christoph and Rudawski, Piotr and Kroon, David and Rading, Linnea and Dahlström, J M and Mauritsson, Johan and Johnsson, Per and Arnold, Cord and L'Huillier, Anne},
  issn         = {2045-2322},
  language     = {eng},
  publisher    = {Nature Publishing Group},
  series       = {Scientific Reports},
  title        = {Efficient high-order harmonic generation boosted by below-threshold harmonics.},
  url          = {http://dx.doi.org/10.1038/srep01410},
  volume       = {3},
  year         = {2013},
}